problem adding files to trusted

I am having a problem with adding a file to the trusted files section of CIS 7.0.317799.4142 on my vista home premium. When the file is added and ok clicked it is fine. But when opened again the file is no longer in trusted and is once more being isolated in the autom sandbox as unknown.

Are you sure you closed the Advanced Settings screen with the OK button?

yes and now i have it again comodo is a load of shit and is going off my computer

Sorry to see you go. In case you want to stick a round a bit more.With what file(s) or executable(s) is this happening?